1097 . 握手

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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

npsc npsc-senior npsc-2020

Description

題目 PDF 檔在這裡

Input Format

Output Format

Sample Input 1

4
4 2 0 3

Sample Output 1

13

Sample Input 2

6
12 7 5 20 7 1

Sample Output 2

116

Sample Input 3

15
10 13 19 2 43 28 20 36 28 23 28 10 48 31 46

Sample Output 3

1704

Hints

Problem Source

NPSC 2020 高中組初賽 pB

Subtasks

No. Testdata Range Constraints Score
1 0~2 範例測資 0
2 0~18 無額外限制 100

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 1000 1048576 1048576 1 2
1 1000 1048576 1048576 1 2
2 1000 1048576 1048576 1 2
3 1000 1048576 1048576 2
4 1000 1048576 1048576 2
5 1000 1048576 1048576 2
6 1000 1048576 1048576 2
7 1000 1048576 1048576 2
8 1000 1048576 1048576 2
9 1000 1048576 1048576 2
10 1000 1048576 1048576 2
11 1000 1048576 1048576 2
12 1000 1048576 1048576 2
13 1000 1048576 1048576 2
14 1000 1048576 1048576 2
15 1000 1048576 1048576 2
16 1000 1048576 1048576 2
17 1000 1048576 1048576 2
18 1000 1048576 1048576 2
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